I, too, scaled it down to 1 and it scaled perfectly, altho, I tend to eyeball amounts & probably erred a little on the plus size. (For the record, the division scales down to 1.25 oz each of amaretto & tequila & half an oz of orange liqueur (I used Grand Marnier. Will try it with Triple Sec next time) I'm not sure with an almost 1:1 ratio of s&s to alcohol, anyone cannot taste the alcohol.). I also used granulated sugar instead of confectioners. I like texture/sweetness level better.